  /* 功能卡片样式 */
        .features {
            background: white;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .feature-card {
            background: #fff;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }

        .feature-icon {
            width: 70px;
            height: 70px;
            background: rgba(74, 108, 247, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: #4a6cf7;
            font-size: 28px;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: #222;
        }

        .feature-card p {
            color: #666;
        }